import collections
n = int(input())
L = list(map(int,input().split()))
ans = 0
for i in range(n):
    for j in range(i,n):
        for k in range(j,n):
            if L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j]:
                if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1
print(ans) import collections collections n = int(input()) n int(input()) int input() input L = list(map(int,input().split())) L list(map(int,input().split())) list map(int,input().split()) map int input().split() ().split () input split ans = 0 ans 0 for i in range(n):
    for j in range(i,n):
        for k in range(j,n):
            if L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j]:
                if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1 i range(n) range n for j in range(i,n):
        for k in range(j,n):
            if L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j]:
                if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1 j range(i,n) range i n for k in range(j,n):
            if L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j]:
                if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1 k range(j,n) range j n if L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j]:
                if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1 L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j] L[i]+L[j] > L[k] and L[k]+L[j] > L[i] L[i]+L[j] > L[k] L[i]+L[j] L[i] L i L[j] L j L[k] L k L[k]+L[j] > L[i] L[k]+L[j] L[k] L k L[j] L j L[i] L i L[i]+L[k] > L[j] L[i]+L[k] L[i] L i L[k] L k L[j] L j if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1 L[i] != L[j] and L[j] != L[k] and L[k] != L[i] L[i] != L[j] and L[j] != L[k] L[i] != L[j] L[i] L i L[j] L j L[j] != L[k] L[j] L j L[k] L k L[k] != L[i] L[k] L k L[i] L i ans += 1 ans 1 print(ans) print ans L = list(map(int,input().split())) list(map(int,input().split())) L n = int(input()) int(input()) n ans = 0 0 ans ans += 1 1 ans
import collections
n = int(input())
L = list(map(int,input().split()))
ans = 0
for i in range(n):
    for j in range(i,n):
        for k in range(j,n):
            if L[i]+L[j] > L[k] and L[k]+L[j] > L[i] and L[i]+L[k] > L[j]:
                if L[i] != L[j] and L[j] != L[k] and L[k] != L[i]:
                    ans += 1
print(ans)